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| author | Daniel Kahn Gillmor <dkg@fifthhorseman.net> | 2021-09-17 16:37:24 -0400 |
|---|---|---|
| committer | Daniel Kahn Gillmor <dkg@fifthhorseman.net> | 2021-09-17 16:37:24 -0400 |
| commit | a00a79ddf41eb14d56bdea076b5c252029896431 (patch) | |
| tree | 7cdd548dccb4c3adc877e8b404e2fd8a6b9c684f | |
| parent | 78449e86c22dbad71c634cb18fb264a37d479e32 (diff) | |
| download | gnutls-a00a79ddf41eb14d56bdea076b5c252029896431.tar.gz | |
lib/x509: Avoid memcpy when string is empty
This fixes an ASAN warning in fuzz/gnutls_private_key_parser_fuzzer
when run against the malformed private key
fuzz/gnutls_private_key_parser_fuzzer.in/10a5c92fa30ddb6cbb4286d7699b2b7a7e032b17
Signed-off-by: Daniel Kahn Gillmor <dkg@fifthhorseman.net>
| -rw-r--r-- | lib/x509/common.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/x509/common.c b/lib/x509/common.c index c156bd96a9..94d206ff75 100644 --- a/lib/x509/common.c +++ b/lib/x509/common.c @@ -630,7 +630,8 @@ _gnutls_x509_decode_string(unsigned int etype, if (td.data == NULL) return gnutls_assert_val(GNUTLS_E_MEMORY_ERROR); - memcpy(td.data, str, str_size); + if (str_size > 0) + memcpy(td.data, str, str_size); td.data[str_size] = 0; if (allow_ber) |